Sep 6, 2010 11:00pm PDT
scaled the tower late today. he says this won't be his last climb. don joins us live from south of market in san francisco. >> right her at the millenium tower. he climbed the world trade center and sears tower but he says that he had to do this and actually a number of years ago u.s. special forces told him that the world trade center would be attacked he didn't know when but ever since 9/11 he's been carrying around the guilt. >> lacking at the building i mean there's this wall of fear that facing it is so intimidating. >>reporter: i the sky scraper man after his arrest. blisters on the hands and citation for trespassing and public nuisance. but this climb up the 60 story tower was for a reason he says. he believes sky scrapers are vulnerable to another terrorist attack. and that firemen can't battle blazes at this high at talked and more. >> in doing so i felt like i was doing it for all the cancer survivors out there. >>reporter: he's a survivor of stage 4 cancer. almost killed him 10 years ago. that's when he began planning this climb. he ascended slowly with huge suction cup.